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TM 9-2320-364-20-2
2-1818
10. SERVICE BRAKES ON AXLE NO. 3 DO NOT APPLY.
INITIAL SETUP
1.
Do both sets of brakes on
Axle No. 3 fail to apply?
Go to Step 4 of this
Fault.
START
YES
NO
Service brakes on Axles No. 4
and No. 5 operate correctly.
Both sets of brakes on Axle
No. 3 do not apply correctly.
Air lines crimped or leaking
and/or fittings, valves, air
chambers leaking.
Service relay valve No. 2
faulty.
Air chambers faulty.
Brakes faulty.
KNOWN INFO
POSSIBLE PROBLEMS
TEST OPTIONS
REASON FOR QUESTION
Operation test.
If only one set of brakes on Axle
No. 3 does not apply correctly,
problem is in air chamber or
brake components.
2-24. BRAKES SYSTEM TROUBLESHOOTING (CONT).
Tools and Special Tools
Tool Kit, General Mechanic’s: Automotive
(Item 74, Appendix G)
Pressure Test Kit (Item 50, Appendix G)
Equipment Condition
Engine OFF, (TM 9-2320-364-10)
Parking brake applied, (TM 9-2320-364-10)
Wheels chocked, (TM 9-2320-364-10)
References
TM 9-2320-364-10
WARNING
Personnel Required
Two
NOTE
The following troubleshooting procedures cover one set of brakes for Axle No. 3, but they apply to
both sets of brakes.
Read WARNING
on Page 2-1819
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